<?php 

header("Content-type: text/html; charset=utf-8"); 

echo "学并思";exit;

$num ='10';

$name = "xuebingsi";

$age = 18;

$orderId = 5645654;

$order_id = 45646456;

$姓名="学并思";

$arr = ['广州','深圳'];

// echo $姓名;
echo $arr;
echo "<br>";
var_dump($arr);
// echo "<br>";
// print($arr);
// echo "<br>";
// print_r($arr);
// echo "<br>";
// printf($arr);


// 赋值

$num = 90;
$num = 80;


// 传址
$a = 90;

$b = &$a;

$b = 100;

echo $a;

//可变变量
//
$x = "xbs";

$$x="abc";

echo $xbs;


echo $nnnn;








 ?>